Omar had no answer. He remembered being that teenager himself.
Every khutbah begins with the Khutbat-ul-Haajjah (the Sermon of Need).
According to Islamic jurisprudence (Fiqh), a valid Khutbah must contain several "pillars" ( Arkan ), which are traditionally recited in Arabic to preserve the sanctity of the act of worship:
The Jummah Khutbah, also known as the Friday sermon, is a crucial part of the Islamic faith. It is a weekly gathering where Muslims come together to listen to a sermon, which aims to guide and inspire them to live a righteous life.
Many Khatibs begin with the Khutbah al-Hajah , a standard opening used by the Prophet (PBUH):